Title:
MEDICINAL OXYGEN CANNULA
Document Type and Number:
WIPO Patent Application WO/2020/154933
Kind Code:
A1
Abstract:
A medicinal oxygen cannula, comprising a cannula body (1), a transition cannula (2), and two nasal prongs (3). The cannula body (1) is connected to the transition cannula (2); the two nasal prongs (3) are radially communicated with the transition cannula (2); the inner wall of connecting parts of the nasal prongs (3) and the transition cannula (2) is of a smooth transition arc structure. The structure of the inner wall of the connecting parts of the transition cannula (2) and the nasal prongs (3) is improved, so that an airflow flowing through cannot generate a turbulent flow, and the probability of noise is reduced. By increasing the inner diameters of the transition cannula (2) and the nasal prongs (3), the airflow velocity is reduced, and noise generated when pressurized air flows through is further avoided. In addition, an air permeable filler (21) is additionally provided in the transition cannula (2), so that the purpose of reducing the air velocity is also achieved.
Inventors:
LIU YING (CN)
LI SHUANG (CN)
HU WANNING (CN)
LIU HAOYUAN (CN)
ZHENG RUIYUN (CN)
ZHENG HAOYUAN (CN)
LI SHUANG (CN)
HU WANNING (CN)
LIU HAOYUAN (CN)
ZHENG RUIYUN (CN)
ZHENG HAOYUAN (CN)
Application Number:
PCT/CN2019/073800
Publication Date:
August 06, 2020
Filing Date:
January 30, 2019
Export Citation:
Assignee:
TANGSHAN HARBIN SHIP TECH CO LTD (CN)
UNIV NORTH CHINA SCIENCE & TECHNOLOGY (CN)
UNIV NORTH CHINA SCIENCE & TECHNOLOGY (CN)
International Classes:
A61M16/06
Foreign References:
| US20160051787A1 | 2016-02-25 | |||
| US20160051787A1 | 2016-02-25 | |||
| CN103706009A | 2014-04-09 | |||
| CN206660251U | 2017-11-24 | |||
| CN107596524A | 2018-01-19 | |||
| CN206642192U | 2017-11-17 | |||
| CN104902948A | 2015-09-09 |
Attorney, Agent or Firm:
IP MARCH (CN)
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